Window.



F. P. WALKER.

WINDOW.

APPLlCATiON FILED AUG; 12. 1916.

Patented Feb. 20, 1917.

2 SHEETSTSHEET I.

A g a F. P. WALKER.

wmoow APPLICATION FILED AUG. 12. 1916.

- Patented Feb. 20, 1917.

2 SHEETS-SHEET 2.

FnnnnnIcK PICKERING VV-ALKER, or nnnnv'rnnn', ENGLAND; AssIGNoia TO THE GRIT'IALL MANUFACTURING COMPANY, LIMITED, or MANOR wonKs, BRAIN- TREE, ENGLAND.

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Specification of Letters Patent. Patented Feb. 20, 1917.

Application filed August 12, 1916. Serial No. 114,645.

in pivoted sliding sashes, having pivots which run in channels in the j ambs and are secured to the sash bars and havmg two flanges formingweather strips fixed to each sash bar, the flanges being fixed to opposite sides of the sash bar on different sides of the pivot.

According to this invention theweather strips are in contact with the jambs when the window is shut. Also means are provided to turn the sashes slightly upon the pivots when the window is opened. Preferably the pivot is a cone and the sash is secured to it by a spring friction device. The action of shutting the window contracts or extends the spring by the movement of the sash which is in frictional contact with it, and when the window is opened the sash is turned by the extension or contraction of the spring. The result of slightly turning the sashes upon the pivots is that the weather strips are moved out of contact with the sides of the channels in the jambs thereby allowing the sash to slide easily upon the jambs. By this arrangement also the sash is held in any position upon the pivot. riages which have no weather strips .but have two pivoted arms which have rollers at their ends engaging with the sides of the channels in the jambs. The arms are connected together by a spring which tends to keep the rollers in contact with the sides of.

the channels.

Means are provided to hold the weather strips against the sides of the channels in the jambs when the window is closed.

Figure 1 is a side elevation of part of one side of a jamb and Fig. 2 is an elevation The pivots are supported by car-- secured to pivots c, 0 free to move in channels cl, al m the amb c. Flanges 7, f

and, g, g acting as weather-strips, are fixed ings IL, if, in the carriages '11, 2' which slide in the channels (Z, (Z The bear ings are constantly pressed toward the larger, ends of the pivots by. springs 0 0 thus tending to hold the sash in the position into which it is ,turned. Thesprings c 0", being contracted by the turning of the sash" when the window is shut, cause the sashes to turn slightly when the window is opened. on the carriages i,- e' are two arms j, f, and 70, 70 pivoted at Z, Z and m (Z respectively. The carriages i, i are con nected together by a chain p which passes over the pulley q, the sashes balancing each other.

On the sill r is a cam piece 8 which guides the sash into the channel t thus holding the flanges g, 9 against the sides of the channels (Z, (P.

The flanges on the channels with which the jambs c are provided are of course so formed as to permit the sashes to be properly turned.

The springs 0 c are so connected with the sashes and with the bearings h, h 'that when the sashes are in closed position the springs are placed under tension and therefore when the sashes are released in order to be opened the springs cause the sashes to swing or open to a small extent. In this way the weather strips carried by the sashes are withdrawn from the jambs and the raising and lowering of the sashesis facilitated. The pivots c, c are made conical'in order that they may exert a wedging or bind ing action on the bearings h, h of the carriages 2', 2' as the bearings are constantly pressed toward the larger ends of the pivots by the springs 0 0 In this way the sash is held in the position to which it is turned.

What I claim is 1. The combination with a window frame having vertical channels in the jambs, of a sash having sash bars provided with pivots sliding in said channels, and two weather strips fixed toeach sash bar one above and the other below the pivot and one of which is on the outside of the sash While the other is on the inside thereof; all of said strips be: ing in contact with the jambs when the window is closed.

:2. The combination with a window frame having vertical channels in the jambs, of a sash having sash bars provided with pivots sliding in said channels, and two weather strips fixed to each sash. bar one above and the other below the pivot and one of which is on the outside of the sash while the other on the inside thereof, all of said. strips being in contact with the janibs when the window is closed, means for holding the sash in closed position, and devices placed under tension when the sash is closed for turning Copies of this patent may be obtained for sliding in said channels, two weather strips fixed to each sash bar one above and the other below the pivot and one of which is on the outside of the sash while the other is on the inside thereof, all of said strips being in contact with the jambs when the window is closed, and springs associated with the pivots'of the sash which are placed under tension when the sash is closed and which serve to turn the sash slightly on its pivots to withdraw the weather strips of the sash from the jainbs and to thus facilitate the raising and lowering of the sash.

FREDERICK PIOKERING WALKER.

five cents each, by addressing the Commissioner of Patents.

Washington; 1). 0. 

